For everybody fighting with occasional clipping (or perfectionists wanting to test everything) you should try the attached sample, udial.

Testing:

play the sample in your favourite player (decoded or not, having disabled all DSPs and EQs that can interfere)

if the output sounds weird at any time you should:

lower the output vol. in your soundcard config (should be the speaker icon in your system tray).

For some soundcards 48kHz is better (audigy 2 etc.).

lower the vol. till the sample doesn't sound weird at any time.

The output will sound really weird if your settings clip.Your output can occasional clip without you knowing/hearing it. But for us perfectionists this will theoretically give a better quality output.

ATTENTION: Play this sample at a low volume anytime, even if you hear nothing special! It can be very harmful to equipment and/or your ears.It's strongly recommended to use some very cheap (PC) speakers if you want to test this,otherwise you might really ruin your tweeters (it has happened several times already).

When I first played it on my Audigy, I got the weird alien sounds. I discovered that removing the soft-clipping limiter filter in foobar removes the alien sounds. Not only that, the weird alien sounds sound different depending on if the filter is before or after the resampler filter. Also with the resampler off I get the alien sounds and crackling sounds, but they all go away when SSRC 48kHz resampling's on - attributing to the Audigy's crappy built-in resampler...